66733550 has 24 divisors (see below), whose sum is σ = 133673736. Its totient is φ = 24639840.

The previous prime is 66733531. The next prime is 66733631. The reversal of 66733550 is 5533766.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66733550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50684 + ... + 51983.

It is an arithmetic number, because the mean of its divisors is an integer number (5569739).

Almost surely, 2^66733550 is an apocalyptic number.

66733550 is an abundant number, since it is smaller than the sum of its proper divisors (66940186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66733550 is a wasteful number, since it uses less digits than its factorization.

66733550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102692 (or 102687 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 35.

The square root of 66733550 is about 8169.0605335008. The cubic root of 66733550 is about 405.6156870313.

The spelling of 66733550 in words is "sixty-six million, seven hundred thirty-three thousand, five hundred fifty".